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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: Bài 1 : Thực hiện phép tính b) 13 . 17 – 256 : 16 + 14 : 7 – 1 c) 18 : 3 + 182 + 3 . ( 51 : 17 ) d) 15 – 25 . 8 : ( 100 . 2 ) e) 25

Toán Lớp 6: Bài 1 : Thực hiện phép tính
b) 13 . 17 – 256 : 16 + 14 : 7 – 1
c) 18 : 3 + 182 + 3 . ( 51 : 17 )
d) 15 – 25 . 8 : ( 100 . 2 )
e) 25 . 8 – 12 . 5 + 170 : 17 – 8

Comments ( 2 )

  1. Giải đáp:
    b)
    13.17-256:16+14:7-1
    =221-16+2-1
    =205+1
    =206
    c)
    18:3+182+3.(51:17)
    =6+182+3.3
    =188+9
    =197
    d)
    15-25.8:(100.2)
    =15-200:200
    =15-1
    =14
    e)
    25.8-12.5+170:17-8
    =200-60+10-8
    =140+10-8
    =150-8
    =142

  2. b)13 . 17 –256 : 16 + 14 : 7 – 1
    = 221-256 : 16 + 14 : 7 – 1
    = 221- 16+14 : 7 – 1
    = 221-16+2-1
    = 205+2-1
    = 207-1
    = 206
    c)18 : 3 + 182 + 3.(51 : 17)
    = 18 : 3 + 182 + 3.3
    = 6 +182+3.3
    = 6 + 182+9
    =188+9
    = 197
    d) 15 – 25 .8 : (100 . 2)
    =15-25.8: 200
    =15- 200:200
    = 15-  1
    =14
    e) 25 . 8 – 12.5 + 170 : 17 – 8
    = 200-60+10-8
    =140+10-8
    = 150 – 8
    =  142
    @thew

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222-9+11+12:2*14+14 = ? ( )